Do I need to include freelance income on my W4 if I already reported it on a 1099-MISC for tax purposes?
I've been working a regular full-time job but started doing some freelance graphic design on the side last year. Made about $7,800 from these gig projects so far. I'm a bit confused about the best way to handle the taxes for this side income. I know I'll be getting a 1099-MISC from these clients, but I'm wondering if I should also adjust my W4 at my main job to account for this extra income? Would increasing my withholding on my W4 be the simplest way to handle these taxes rather than dealing with quarterly estimated payments? I'm pretty new to having multiple income sources and don't want to mess anything up when filing season comes around.
18 comments


Darren Brooks
You've got a few options here for handling taxes on your freelance income, and adjusting your W4 at your main job is definitely one of them! When you receive 1099-MISC income, you're responsible for both income tax and self-employment tax (which covers Social Security and Medicare). The self-employment tax is roughly 15.3% of your net freelance income, plus you'll owe regular income tax based on your tax bracket. Increasing withholding on your W4 is a perfectly valid way to cover these taxes. On the revised W4 form, you can add an additional amount to be withheld from each paycheck (line 4c). You'd calculate approximately how much extra tax you'll owe from the freelance work and divide it by the number of remaining pay periods for the year. The alternative is making quarterly estimated tax payments using Form 1040-ES, which some people find more complicated to manage.
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Rosie Harper
•If I go the W4 route, is there a specific calculation to figure out how much extra to withhold? Or do I just guess and hope I withhold enough?
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Darren Brooks
•For a quick calculation, take your expected freelance income and multiply by about 30% as a rough estimate for combined income and self-employment taxes. Then divide by your remaining pay periods for the year. For more precision, you can use the IRS Tax Withholding Estimator online tool. It lets you input both your W-2 job and additional income, then recommends exactly how to adjust your W4. This is especially helpful if your freelance income varies throughout the year.
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Elliott luviBorBatman
I was in a similar situation last year when I started my photography side hustle. I tried figuring it out alone but kept getting confused about how much to set aside. Then I discovered https://taxr.ai which literally saved me from a potential tax disaster. The site analyzed my payment records from both my regular job and freelance work, then gave me personalized recommendations for handling the taxes. It showed me exactly how much to adjust my W4 withholdings and even helped me understand if quarterly payments made more sense based on when I was earning the freelance income throughout the year. What I found super helpful was that it looked at my specific situation rather than just giving generic advice about percentages to withhold.
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Demi Hall
•Does it work with irregular freelance income? I do web development but my projects are all different sizes and not consistent month to month.
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Mateusius Townsend
•I'm skeptical of tax tools that aren't from the IRS directly. How does it actually get accurate calculations when tax situations can be so complex?
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Elliott luviBorBatman
•It absolutely works with irregular income! That was my situation too. You can upload your payment history however sporadic it is, and it will account for the irregularity when creating recommendations. For your question about accuracy, I was hesitant at first too. What convinced me is that it uses the actual IRS tax formulas and rules, but makes them accessible. It's not changing the calculations, just making them easier to understand and apply to your specific numbers. It saved me from underpaying by nearly $1,200 last year because I would have completely miscalculated my self-employment tax portion.
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Mateusius Townsend
Following up on my question about taxr.ai - I decided to give it a shot when I realized how much I was stressing about my tutoring side income. Just wanted to say it was legitimately helpful. Not only did it show me how to adjust my W4, but it caught a mistake I was making in how I was calculating my business expenses. Turns out I was counting some personal expenses that weren't actually deductible. The recommendation it gave me ended up being spot on. When I filed my taxes this year, I was within $75 of breaking even (tiny refund). Without it, I would've owed a penalty for underpayment based on my old calculation method.
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Kara Yoshida
If you're getting overwhelmed dealing with these tax issues, there's also another route. I spent WEEKS trying to get someone at the IRS to answer questions about my freelance income situation. Constantly on hold, disconnected calls, pure frustration. I finally used https://claimyr.com and it completely changed everything. They have this system that holds your place in the IRS phone queue and calls you when an actual agent is ready to talk. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c The IRS agent I spoke with gave me specific guidance about my situation that none of the online calculators could. They explained exactly how to fill out my W4 to account for my side business and confirmed I was tracking the right expenses for tax time.
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Philip Cowan
•Wait wait wait... this actually works? I tried calling the IRS three times last month and gave up after being on hold for 2 hours each time. How does this service even get through when nobody else can?
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Caesar Grant
•This sounds like a scam. Why would I pay a third party to call a government agency that's free to contact? I bet they just auto-dial constantly and take your money for something you could do yourself.
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Kara Yoshida
•Yes, it absolutely works! They use some kind of technology that maintains your place in the queue without you having to stay on the phone. When I used it, I got a call back in about 50 minutes (after previously wasting hours trying on my own). It's definitely not a scam. I was skeptical too, but I was desperate after my third attempt waiting on hold. They don't just auto-dial - they have a system that navigates the IRS phone tree and holds your spot. Think of it like hiring someone to wait in a long line for you. The time I saved was absolutely worth it, especially since the IRS agent gave me specific advice about handling both W-2 and 1099 income that solved my exact problem.
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Caesar Grant
Well I'm eating my words about Claimyr being a scam. After my skeptical comment, I kept trying to reach the IRS myself about my 1099-MISC reporting question. Three more attempts, hours wasted. Finally broke down and tried the Claimyr service. Got connected to an IRS agent in 45 minutes without having to sit by my phone. The agent walked me through exactly how to handle my W4 adjustments with my freelance writing income and regular job. She even explained the quarterly estimated payment threshold so I'd know when I need to switch methods in the future if my side income increases. Genuinely surprised it worked so well. Sometimes it's worth admitting when you're wrong!
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Lena Schultz
Don't forget that if you're doing freelance work, you need to track all your business expenses! Those can significantly reduce your taxable income. Things like: - Portion of internet/phone if used for business - Software subscriptions - Equipment - Home office (if you have dedicated space) - Mileage for business travel This will lower the total income you need to pay taxes on, which means less withholding needed on your W4.
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Gemma Andrews
•Do you need receipts for all business expenses? I'm terrible at keeping track of that stuff but don't want to miss out on deductions.
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Lena Schultz
•Yes, you should keep receipts for all business expenses. The IRS requires documentation to support deductions in case of an audit. It doesn't have to be paper receipts though - digital records work too. I use a combination of a dedicated credit card for business expenses (the statements serve as records) and a simple spreadsheet where I log expenses and note where the receipt is stored. For smaller items under $75, the requirements are a bit less strict, but I still recommend tracking everything.
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Pedro Sawyer
Has anyone considered that adjusting your W4 might result in overwithholding? I mean, if you're bad at estimating your freelance income, you might end up giving the government an interest-free loan until tax time.
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Mae Bennett
•Better to overwithhold than underwithhold and get hit with penalties though. I learned that the hard way last year.
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